Aiming device

ABSTRACT

An aiming device is provided. The aiming device includes an erector tube assembly, a moving plate and a crosshair. The moving plate, disposed on the erector tube assembly, is movable along a direction. The crosshair is disposed on the moving plate. When the moving plate moves, the crosshair moves with the moving plate along the direction.

CROSS REFERENCE TO RELATED APPLICATIONS

This Application claims priority of Taiwan Patent Application No.097140609, filed on Oct. 23, 2008, the entirety of which is incorporatedby reference herein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an aiming device, and in particularrelates to an optical sight.

2. Description of the Related Art

The aiming device is disposed on a firearm to assist aiming of a target.FIG. 1 is cross section of a conventional aiming device 10. Theconventional aiming device 10 comprises a housing 101, an objective lensassembly O1, an ocular lens assembly O2, an erector tube assembly 103and a crosshair 105. The objective lens assembly O1 is disposed on anobjective end of the housing 101 while the ocular lens assembly O2 isdisposed on an ocular end of the housing 101. The erector tube assembly103, is disposed in the housing 101 and between the objective end andthe ocular end, wherein an upside down image received by the ocular lensis adjusted to a correct position. The crosshair 105 is disposed on anend of the erector tube assembly 103, which is near the ocular end ofthe housing 101.

FIG. 2 is a front view showing the crosshair 105 of the conventionalaiming device 10. The crosshair 105 is formed by two linear linesperpendicularly intersecting with each other, of which a point of aim isformed to focus onto a target. Additionally, the crosshair 105 furthercomprises several dots A. When shooting at a long ranged target, thedots A may be used to assist the user to compensate for the effect ofgravity on the bullet in order to precisely hit the target.

BRIEF SUMMARY OF THE INVENTION

An aiming device is provided. The aiming device comprises an erectortube assembly, a moving plate and a crosshair. The moving plate,disposed on the erector tube assembly, is movable along a direction. Thecrosshair is disposed on the moving plate. When the moving plate moves,the crosshair moves with the moving plate along the direction.

Another aiming device is provided. The aiming device comprises anerector tube assembly, a first moving plate, a second moving plate and acrosshair. The first moving plate, disposed on the erector tubeassembly, is movable along a first direction. The second moving plate,disposed on the first moving plate, is movable along a second direction.The crosshair is disposed on the second moving plate. When the firstmoving plate or the second moving plate moves, the crosshair moves withthe first moving plate along the first direction or moves with thesecond moving plate along the second direction.

A detailed description is given in the following embodiments withreference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention can be more fully understood by reading thesubsequent detailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 is cross section of a conventional aiming device;

FIG. 2 is a front view showing a crosshair of the conventional aimingdevice;

FIG. 3A is a schematic view of an aiming device of an embodiment of theinvention;

FIG. 3B is an exploded view of the aiming device in FIG. 3A; and

FIGS. 4A-4E are front views showing different operations of the aimingdevice in FIG. 3A.

DETAILED DESCRIPTION OF THE INVENTION

The following description is of the best-contemplated mode of carryingout the invention. This description is made for the purpose ofillustrating the general principles of the invention and should not betaken in a limiting sense. The scope of the invention is best determinedby reference to the appended claims.

Referring to FIGS. 3A and 3B, FIG. 3A is a schematic view of an aimingdevice of an embodiment of the invention, and FIG. 3B is an explodedview of the aiming device in FIG. 3A. A housing and some opticalcomponents are eliminated in FIGS. 3A and 3B for clarity.

As shown in FIG. 3A, the aiming device 100 comprises the housing (notshown), an erector tube assembly 110, a moving assembly and a crosshairC. The erector tube assembly 110, disposed in the housing, comprises aconnecting base 111 connected to the moving assembly. The crosshair C isdisposed on the moving assembly, and the point of aim on the crosshair Caligns with an optical axis a of the erector tube assembly 110. When themoving assembly moves relatively to the erector tube assembly 110, thepoint of aim on the crosshair C is off from the optical axis a.

As shown in FIG. 3B, the moving assembly comprises a first moving plate130, a second moving plate 150, a first motor M1, a second motor M2, twofirst position members 171 and two second position members 172. Thefirst motor M1 and the second motor M2 respectively comprise a firstaxle A1 and a second axle A2, and the first and second motors M1, M2rotate to spin the first axle A1 and the second axle A2.

The connecting base 111 comprises a fixing portion F and a firstposition portion 111A. The fixing portion F has a through hole and thefirst position portion 111A comprises four protrusions, each with athrough hole formed thereon

The first moving plate 130 comprises a fixing portion F′, a firstconnecting portion F1, a first corresponding position portion 130A and asecond position portion 130B. The fixing portion F′ has a through hole,and the first connecting portion F1, corresponding to the fixing portionF of the connecting base 111, also has a through hole. The firstcorresponding position portion 130A, corresponding to the first positionportion 111A, comprises four protrusions, each with a through holeformed thereon. The second position portion 130B also comprises fourprotrusions, each with a through hole formed thereon.

The second moving plate 150 comprises a second connecting portion F2 anda second corresponding position portion 150B. The second connectingportion F2, corresponding to the fixing portion F′ of the first movingplate 130, has a through hole. The second corresponding position portion150B, corresponding to the second position portion 130B, comprises fourprotrusions, each with a through hole formed thereon.

The crosshair C is disposed on the second moving plate 150. The twosecond position members 172, at two sides of the second moving plate150, respectively pass through the second corresponding position portion150B of the second moving plate 150 and the second position portion 130Balong a direction parallel to a Y-axis, and are fixed on the secondposition portion 130B. In other words, the second moving plate 150 isfixed on the first moving plate 130 via the second position member 172.However, the second corresponding position portion 150B is still able tomove on the second position members 172, allowing the second movingplate 150 to move relatively to the first moving plate 130.

The second axle A2 of the second motor M2 passes through the fixingportion F′ of the first moving plate 130 and the second connectingportion F2 of the second moving plate 150 in a direction parallel to theY-axis, and is fixed on the fixing portion F′. Because the second axleA2 and inner surfaces of the through holes of the second connectingportion F2 comprise threads, the second axle A2, rotated by the secondmotor M2, spins to move the second connecting portion F2 thereon, andallows the second moving plate 150 to move relatively to the firstmoving plate 130 along the Y-axis.

The two first position members 171, at two sides of the first movingplate 130, respectively pass through the first corresponding positionportion 130A of the first moving plate 130 and the first positionportion 111A of the connecting base 111 along a direction parallel to anX-axis, and are fixed on the first position portion 111A. In otherwords, the first moving plate 130 is fixed on the connecting base 111via the first position members 171. However, the second correspondingposition portion 150B is still able to move on the second positionmember 172, allowing the first moving plate 130 to move relatively tothe connecting base 111.

The first axle A1 of the first motor M1 passes through the fixingportion F of the connecting base 111 and the first connecting portion F1of the first moving plate 130 in a direction parallel to the X-axis, andis fixed on the fixing portion F. Because the first axle A1 and innersurfaces of the through holes of the first connecting portion F1comprise threads, the first axle A1, rotated by the first motor M1,spins to move the first connecting portion F1 thereon, and allows thefirst moving plate 130 to move relatively to the connecting base 111along the X-axis.

Referring to FIGS. 4A-4E, FIGS. 4A-4E are front views showing differentoperations of the aiming device of the invention. When the aiming device100 is assembled, the point of aim of the crosshair C aligns on theoptical axis of the erector tube assembly 110 (as shown in FIG. 4),which is suitable for a regular shooting range.

Referring to FIGS. 4B and 4C, the first motor M1 is activated to rotatethe first axle A1, allowing the first connecting portion F1 to move left(as shown in FIG. 4B) and right (as shown in FIG. 4C) on the first axleA1. By moving of the first connecting portion F1, the first moving plate130 moves relatively to the erector tube assembly 110 along the X-axis.In addition, the first moving plate 130 moves the second moving plate150 and the crosshair C disposed thereon to change the point of aim ofthe crosshair C on the X-axis, compensating for windage, wherein thetransverse deflection of a projectile is adjusted due to wind effects.

Referring to FIGS. 4D and 4E, the second motor M2 is activated to rotatethe second axle A2, allowing the second connecting portion F2 to move up(as shown in FIG. 4D) and down (as shown in FIG. 4E) on the second axleA2. By moving the second connecting portion F2, the second moving plate150 moves relatively to the first moving plate 130 along the Y-axis. Inaddition, the second moving plate 150 moves the crosshair C disposedthereon to change the point of aim of the crosshair C on the Y-axis,compensating for windage, wherein the vertical deflection of aprojectile is adjusted due to bullet drop.

It should be noted that in the embodiment, the moving assembly of theaiming device 100 comprises the first moving plate 130 and the secondmoving plate 150. By moving the first moving plate 130 or the secondmoving plate 150, the position of the crosshair C on the X-axis and theY-axis is changed. However, it is not limited thereto, the aiming device100 may comprise only one moving plate moving along the X-axis or theY-axis relatively to the erector tube assembly, and the crosshair C canbe directly disposed on the moving plate. When the moving plate moves,the crosshair would be moved thereby along the X-axis or the Y-axis.

The aiming device 100 of the invention incorporates motors into themoving plates, which helps automatically adjust the position of thecrosshair C, enhancing firing accuracy of the aiming device. Moreover,the point of aim of the crosshair C is able to move within the housing,such that aiming dots on the crosshair of conventional aiming devicescan be eliminated, simplifying manufacturing process and saving costs.

While the invention has been described by way of example and in terms ofthe preferred embodiments, it is to be understood that the invention isnot limited to the disclosed embodiments. To the contrary, it isintended to cover various modifications and similar arrangements (aswould be apparent to those skilled in the art). Therefore, the scope ofthe appended claims should be accorded the broadest interpretation so asto encompass all such modifications and similar arrangements.

1. An aiming device, comprising an erector tube assembly; a first movingplate, disposed on the erector tube assembly, moving along a firstdirection; a second moving plate, disposed on the first moving plate,moving along a second direction; and a crosshair disposed on the secondmoving plate, wherein when the first moving plate or the second movingplate moves, the crosshair moves with the first moving plate along thefirst direction or moves with the second moving plate along the seconddirection, wherein the connecting base comprises a first positionportion, the first moving plate comprises a first corresponding positionportion, and the aiming device further comprises a first positionmember, and the first position member, passing the first positionportion and the first corresponding position portion, is fixed on thefirst position portion, and the first corresponding position portionmoves on the position member.
 2. The aiming device as claimed in claim1, further comprising a first motor disposed on the erector tubeassembly, wherein the first motor comprises a first axle connected tothe first moving plate.
 3. The aiming device as claimed in claim 2,wherein the erector tube assembly comprises a connecting base, and thefirst moving plate and the first motor are disposed on the connectingbase.
 4. The aiming device as claimed in claim 2, wherein the firstmoving plate comprises a first connecting portion, and the first axlepasses through the first connecting portion, when the first motor isactivated to rotate the first axle, allowing the first connectingportion to move on the first axle, and the first moving plate to movealong with the first connecting portion.
 5. The aiming device as claimedin claim 1, wherein the first direction is parallel to a Y-axis or anX-axis.
 6. The aiming device as claimed in claim 1, wherein the firstdirection is perpendicular to the second direction.
 7. The aiming deviceas claimed in claim 2, further comprises a second motor disposed on thefirst moving plate, wherein the second motor comprises a second axleconnected to the second moving plate.
 8. The aiming device as claimed inclaim 1, wherein the first moving plate comprises a second positionportion, the second moving plate comprises a second correspondingposition portion, and the aiming device further comprises a secondposition member, and the second position member, passing through thesecond position portion and the second corresponding position portion,is fixed on the second position portion, and the second correspondingposition portion moves on the second position member.
 9. An aimingdevice, comprising an erector tube assembly; a first moving plate,disposed on the erector tube assembly, moving along a first direction; asecond moving plate, disposed on the first moving plate, moving along asecond direction; and a crosshair disposed on the second moving plate,wherein when the first moving plate or the second moving plate moves,the crosshair moves with the first moving plate along the firstdirection or moves with the second moving plate along the seconddirection; a first motor disposed on the erector tube assembly, whereinthe first motor comprises a first axle connected to the first movingplate; and a second motor disposed on the first moving plate, whereinthe second motor comprises a second axle connected to the second movingplate.